Electrical annunciator



(No Model.)

G. J. KING.

ELECTRICAL ANNUNGIATOR. No. 560,358. Patented May 19, 1896.

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AN DREW 5.6RAHAM. PHUTO'LI'THU.WASHINGTDN.D.C,

UNITED STATES PATENT OFFICE.

GEORGE J. KING, OF OAKLAND, CALIFORNIA.

ELECTRICAL ANNUNCIATOR.

SPECIFICATION forming part of Letters Patent No. 560,358, dated May 19,1896.

Application filed November 21, 1895. Serial No. 569,708. (No model.)

To all whom, it may concern.-

Be it known that I, GEORGE J. KING, a citizen of the United States,residing at Oakland, in the county of Alameda and State of California,have invented certain new and useful Improvements in ElectricalAnnunciators; and I do declare the following to be a full,

clear, and exact description of the invention,

such as will enable others skilled in the art to which it appertains tomake and use the same.

My invention relates to electrical annunciators.

The object of the invention is to provide a device of this character bymeans of which the guests of a hotel may communicate with the clerk andby means of which the clerk may notify the guests that their messageshave been received.

IVith this object in view the invention consists of certain features ofconstruction and combination of parts, which will be hereinafter fullydescribed and claimed.

In the accompanying drawings, Figure 1 is a vertical sectional view ofmy improved annunciator, showing the parts set. Fig.2 is a similar viewshowing the position the parts assume after the indicator has beenactuated.

In the drawings, 1 denotes a box or casing having a face-board 2, whichis separated from the front of said casing, provided with apertures 3,through which the indicators are adapted to slide and be displayed.Secured to the front of the casing is a frame 4, which supports twoelectromagnets 5 and an armature (5, provided with a detent 7.

8 denotes the slide-bar, which is mounted in said frame and projectsthrough the front of the casing and has secured to its forward end anindicator 9, which projects through the apertures in the face-board ofthe casing. A bell-crank lever 10 is pivoted to the rear end of theframe and has one of its ends slotted to engage a laterally-projectingpin 11, projecting from the rear end of the sliding bar 8. The other endof this lever is provided with a weight 12, which has a screw-threadedadjustment thereon to increase the amount of leverage.

13 denotes the circuit-wires, which lead to a battery. It is evidentthat when the circuit is completed and the armature attracted to itsmagnets the slide-bar will be projected forward by the weighted leverand thus thrust the indicator through the faceboard and display to theclerk the number of the room from which the call is made. To inform theguest that the message has been received, I have provided a simplemeans, which consists of two spring-contacts 14: and 15, respectivelyprovided with battery-wires 16. When the clerk receives the message andsets the annunciator, the annunciator striking against one of thesespring-contacts will force it against the other, thereby ringing analarm in the guests room, thus notifying him that his message has beenreceived. This message will only be momentary, as the normal position ofthe slide-bar and indicator is such that the two spring-contacts are outof connection, but are brought into connection when the indicator isthrust inward by the clerk. As soon as he removes the pressure from theindicator the weighted lever will throw the slide-bar forward, so as tobring its dog in engagement with the detent of the armature. This isclearly shown in Fig. 1 of the drawings.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

1. In an annunciator, the combination with electromagnets and theirarmature, said armature being provided with a detent, of a slide-barprovided at one end with an indicator and further provided with adog toengage said detent, and means for projecting the slide-bar and itsindicator forward when the armature is attracted by the electromagnets,said means consisting of a pivoted lever connected with the slide-barand provided with an adjustable weight substantially as set forth.

.2. In an annunciator, the combination with electromagnets and theirarmature, provided with a detent, of a slide-bar provided at one endwith an indicator and provided with a dog to engage the detent,spring-contacts connected with an alarm or indicator and within the pathof movement of the first-named indicator, and means for projecting thefirstnanied indicator forward to display the same, whereby when saidindicator is retracted or reset, it contacts with the spring-contactsand 10 sounds an alarm or displays the signal, substantially as setforth.

In testimony whereof I affix my signature in presence of two witnessesGEORGE J. KING.

Witnesses:

1m 1. BOAK, Tnos. M. ROBINSQN.

